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Finding the Fourth Proportional to 2,057.06, 3,086.46 and 758.21

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Solution

The fourth proportional to 2,057.06, 3,086.46 and 758.21 is: 1,137.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,057.06 : 3,086.46 = 758.21 : x
  2. Step 2: Convert to fraction form
    2,057.06/3,086.46 = 758.21/x
  3. Step 3: Cross multiply
    2,057.06x = 3,086.46 × 758.21
  4. Step 4: Simplify right side
    2,057.06x = 2,340,184.84
  5. Step 5: Solve for x
    x = 2,340,184.84/2,057.06
  6. Step 6: Final answer
    x = 1,137.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.